:root {
    --bg:           #141419;
    --bg-deep:      #0D0E12;
    --signal-red:   #B33038;
    --signal-glow:  #D14654;
    --tuner-amber:  #E8A14B;
    --tuner-warm:   #F2B863;
    --paper:        #F4EDDC;
    --ink:          #F4EDDC;
    --ink-dim:      rgba(244, 237, 220, 0.68);
    --ink-faint:    rgba(244, 237, 220, 0.42);
    --ink-ghost:    rgba(244, 237, 220, 0.16);

    --font-mono:    'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --font-serif:   'Lora', 'Noto Serif SC', 'Songti SC', Georgia, serif;
    --font-hand:    'Caveat', 'Lora', cursive;

    --gutter-l:     clamp(64px, 9vw, 128px);
    --gutter-r:     clamp(32px, 6vw, 96px);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html {
    overflow-x: hidden;
    overflow-y: auto;
    /* subtle, on-brand scrollbar (firefox) */
    scrollbar-width: thin;
    scrollbar-color: rgba(244, 237, 220, 0.14) transparent;
  }
  /* webkit / blink scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
    background: transparent;
  }
  ::-webkit-scrollbar-track {
    background: transparent;
  }
  ::-webkit-scrollbar-thumb {
    background: rgba(244, 237, 220, 0.10);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
    transition: background 0.2s;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: rgba(232, 161, 75, 0.35);
    background-clip: padding-box;
  }
  ::-webkit-scrollbar-corner { background: transparent; }

  html, body {
    background: var(--bg-deep);
    color: var(--ink);
    font-family: var(--font-serif);
    font-feature-settings: "kern" 1, "liga" 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    width: 100%;
    min-height: 100vh;
  }
  body {
    position: relative;
    background:
      radial-gradient(ellipse 80% 60% at 50% 30%,
        rgba(232, 161, 75, 0.10) 0%,
        rgba(232, 161, 75, 0.045) 35%,
        transparent 70%),
      var(--bg-deep);
  }

  /* faint film grain — pure CSS, no images */
  body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: 50;
    opacity: 0.35;
    background-image:
      radial-gradient(rgba(244, 237, 220, 0.08) 0.5px, transparent 0.6px),
      radial-gradient(rgba(244, 237, 220, 0.05) 0.5px, transparent 0.6px);
    background-size: 3px 3px, 7px 7px;
    background-position: 0 0, 1px 2px;
    mix-blend-mode: screen;
  }
  /* drifting "transmission" line */
  body::after {
    content: "";
    position: fixed; left: 0; right: 0; height: 1px;
    pointer-events: none;
    z-index: 51;
    background: linear-gradient(90deg, transparent, rgba(232, 161, 75, 0.18), transparent);
    animation: drift 12s linear infinite;
    opacity: 0.5;
  }
  @keyframes drift {
    0%   { top: -2%;   opacity: 0; }
    8%   { opacity: 0.5; }
    50%  { opacity: 0.5; }
    92%  { opacity: 0; }
    100% { top: 102%; opacity: 0; }
  }

  /* ============================================================
     LAYOUT
     ============================================================ */
  .stage {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    padding-left: var(--gutter-l);
    padding-right: var(--gutter-r);
  }

  /* ============================================================
     TUNER — left side vertical frequency dial
     ============================================================ */
  .tuner {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--gutter-l);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: stretch;
    pointer-events: none;
    user-select: none;
  }
  .tuner__rail {
    position: relative;
    flex: 1;
    width: 1px;
    background: linear-gradient(180deg,
      transparent 0%,
      rgba(244, 237, 220, 0.18) 12%,
      rgba(244, 237, 220, 0.18) 88%,
      transparent 100%);
    margin-top: 7vh;
    margin-bottom: 7vh;
  }
  .tuner__tick {
    position: absolute;
    left: 50%;
    width: 14px;
    height: 1px;
    background: rgba(244, 237, 220, 0.35);
    transform: translateX(-50%);
  }
  .tuner__tick--major {
    width: 22px;
    background: rgba(244, 237, 220, 0.55);
  }
  .tuner__label {
    position: absolute;
    left: -42px;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.05em;
    color: var(--ink-faint);
    white-space: nowrap;
  }
  .tuner__label--target { color: var(--tuner-warm); }

  .tuner__needle {
    position: absolute;
    left: 50%;
    width: 36px;
    height: 1px;
    background: var(--signal-red);
    box-shadow: 0 0 8px rgba(209, 70, 84, 0.7), 0 0 18px rgba(209, 70, 84, 0.4);
    transform: translateX(-50%);
    transition: top 1.4s cubic-bezier(.7, .05, .25, 1);
    cursor: grab;
    touch-action: none;
    pointer-events: auto;
  }
  /* hit box for the needle — invisible, expands grab area vertically */
  .tuner__needle::before {
    content: "";
    position: absolute;
    inset: -10px -6px;
  }
  /* hit box for the rail — invisible, expands click/touch area horizontally */
  .tuner__rail::before {
    content: "";
    position: absolute;
    inset: 0 -22px;
    pointer-events: auto;
  }
  .tuner__rail {
    cursor: pointer;
    touch-action: none;
    pointer-events: auto;
  }
  .tuner__rail[data-dragging="true"] .tuner__needle,
  .tuner__needle:active {
    cursor: grabbing;
  }
  .tuner__rail[data-dragging="true"] .tuner__needle {
    background: var(--tuner-warm);
    box-shadow: 0 0 10px rgba(242, 184, 99, 0.85), 0 0 22px rgba(242, 184, 99, 0.5);
  }
  .tuner__rail[data-dragging="true"] .tuner__needle::after {
    background: var(--tuner-amber);
    box-shadow: 0 0 8px rgba(232, 161, 75, 0.95);
    animation: none;
    transform: translate(-50%, -50%) scale(1.4);
  }
  .tuner__needle::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 5px; height: 5px;
    background: var(--signal-glow);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 6px rgba(209, 70, 84, 0.9);
    animation: needle-pulse 2.4s ease-in-out infinite;
  }
  @keyframes needle-pulse {
    0%, 100% { opacity: 0.85; transform: translate(-50%, -50%) scale(1); }
    50%      { opacity: 1;    transform: translate(-50%, -50%) scale(1.25); }
  }

  .tuner__readout {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-dim);
    letter-spacing: 0.1em;
    white-space: nowrap;
  }
  .tuner__readout strong {
    display: block;
    color: var(--tuner-warm);
    font-weight: 500;
    font-size: 13px;
    margin-bottom: 2px;
  }
  .tuner__masthead {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%) rotate(-90deg);
    transform-origin: center;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.45em;
    color: var(--ink-faint);
    white-space: nowrap;
  }

  /* ============================================================
     MUTE TOGGLE — top right, always visible
     ============================================================ */
  .mute {
    position: fixed;
    top: 24px;
    right: 32px;
    z-index: 40;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px 8px 12px;
    border: 1px solid rgba(244, 237, 220, 0.18);
    background: rgba(14, 15, 18, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--ink-dim);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
  }
  .mute:hover { color: var(--ink); border-color: rgba(244, 237, 220, 0.4); }
  .mute__dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--signal-red);
    box-shadow: 0 0 6px rgba(209, 70, 84, 0.8);
    animation: dot-blink 1.8s ease-in-out infinite;
  }
  .mute[data-muted="true"] .mute__dot {
    background: rgba(244, 237, 220, 0.3);
    box-shadow: none;
    animation: none;
  }
  @keyframes dot-blink {
    0%, 100% { opacity: 0.6; }
    50%      { opacity: 1; }
  }

  /* ============================================================
     OPENING — first 3 seconds
     ============================================================ */
  .opening {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 12vh 0 18vh 0;
    max-width: 720px;
  }
  .opening__cue {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: rgba(244, 237, 220, 0.72);
    margin-bottom: 28px;
    opacity: 0;
    animation: cue-in 0.6s ease-out 0.4s forwards;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.75);
  }
  @keyframes cue-in { to { opacity: 1; } }

  .opening__searching {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--paper);
    margin-bottom: 14px;
    opacity: 0;
    animation: cue-in 0.6s ease-out 0.7s forwards;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.78);
  }
  .opening__searching::after {
    content: "";
    display: inline-block;
    width: 6px; height: 6px;
    margin-left: 8px;
    border-radius: 50%;
    background: var(--tuner-warm);
    animation: search-blink 0.9s steps(2) infinite;
    transform: translateY(-1px);
  }
  @keyframes search-blink { 50% { opacity: 0; } }
  body[data-phase="locked"] .opening__searching { display: none; }

  .opening__greeting {
    font-family: var(--font-serif);
    font-size: clamp(26px, 4.2vw, 44px);
    line-height: 1.5;
    color: var(--ink);
    letter-spacing: 0.02em;
    max-width: 18em;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.9s ease-out, transform 0.9s ease-out;
    text-shadow: 0 3px 22px rgba(0, 0, 0, 0.86), 0 0 18px rgba(244, 237, 220, 0.10);
  }
  .opening__greeting::before {
    content: "「";
    color: rgba(244, 237, 220, 0.58);
    margin-right: 0.1em;
  }
  .opening__greeting::after {
    content: "」";
    color: rgba(244, 237, 220, 0.58);
    margin-left: 0.1em;
  }
  body[data-phase="locked"] .opening__greeting {
    opacity: 1;
    transform: translateY(0);
  }

  .opening__sign {
    margin-top: 36px;
    font-family: var(--font-hand);
    font-size: 22px;
    color: var(--tuner-warm);
    opacity: 0;
    transition: opacity 1.2s ease-out 0.4s;
  }
  body[data-phase="locked"] .opening__sign { opacity: 1; }

  .opening__hint {
    margin-top: 80px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: rgba(244, 237, 220, 0.62);
    opacity: 0;
    transition: opacity 1.5s ease-out 1.2s;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.72);
  }
  body[data-phase="locked"] .opening__hint { opacity: 1; }
  .opening__hint span { color: rgba(244, 237, 220, 0.82); }

  /* ============================================================
     PROGRAMS LIST — second screen
     ============================================================ */
  .programs {
    position: relative;
    padding: 8vh 0 14vh 0;
    max-width: 760px;
  }
  .programs__head {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 56px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.8s, transform 0.8s;
  }
  .programs.in .programs__head { opacity: 1; transform: none; }
  .programs__kicker {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.25em;
    color: rgba(244, 237, 220, 0.62);
  }
  .programs__title {
    font-family: var(--font-serif);
    font-size: 18px;
    color: rgba(244, 237, 220, 0.78);
    font-style: italic;
    font-weight: 400;
  }

  .program {
    display: grid;
    grid-template-columns: 56px 1fr auto;
    gap: 28px;
    padding: 28px 0;
    border-top: 1px solid var(--ink-ghost);
    align-items: baseline;
    cursor: pointer;
    transition: background 0.3s;
    text-decoration: none;
    color: rgba(244, 237, 220, 0.82);
    position: relative;
    opacity: 0;
    transform: translateY(8px);
  }
  .programs.in .program {
    opacity: 1; transform: none;
    transition: opacity 0.8s, transform 0.8s, background 0.3s;
  }
  .programs.in .program:nth-of-type(2) { transition-delay: 0.1s; }
  .programs.in .program:nth-of-type(3) { transition-delay: 0.2s; }
  .programs.in .program:nth-of-type(4) { transition-delay: 0.3s; }
  .programs.in .program:nth-of-type(5) { transition-delay: 0.4s; }
  .programs.in .program:nth-of-type(6) { transition-delay: 0.5s; }
  .program:last-of-type { border-bottom: 1px solid var(--ink-ghost); }

  /* small play button at the left edge of each card — loads to player without navigating */
  .program__play {
    position: absolute;
    left: -34px; top: 50%;
    transform: translateY(-50%);
    width: 22px; height: 22px;
    border-radius: 50%;
    border: 1px solid rgba(244, 237, 220, 0.18);
    background: rgba(14, 15, 18, 0.6);
    color: var(--ink-faint);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    opacity: 0;
    transition: opacity 0.25s, border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s;
  }
  .program__play::before {
    content: "";
    width: 0; height: 0;
    border-left: 6px solid currentColor;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    margin-left: 2px;
  }
  .program:hover .program__play { opacity: 1; }
  .program__play:hover {
    color: var(--signal-glow);
    border-color: rgba(209, 70, 84, 0.6);
    background: rgba(179, 48, 56, 0.08);
    box-shadow: 0 0 10px rgba(209, 70, 84, 0.35);
  }
  .program__play:active { transform: translateY(-50%) scale(0.9); }
  /* show the play button as "playing" when the player is on this program */
  .program[data-current="true"] .program__play {
    opacity: 1;
    color: var(--tuner-warm);
    border-color: rgba(232, 161, 75, 0.5);
  }
  .program[data-current="true"] .program__play::before {
    border-left-color: var(--tuner-warm);
  }

  .program:hover .program__no { color: var(--tuner-warm); }
  .program:hover .program__title { color: var(--ink); }

  .program__no {
    font-family: var(--font-mono);
    font-size: 13px;
    color: rgba(244, 237, 220, 0.58);
    letter-spacing: 0.05em;
    transition: color 0.3s;
    align-self: center;
  }
  .program__body {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .program__title {
    font-family: var(--font-serif);
    font-size: clamp(18px, 1.9vw, 22px);
    line-height: 1.4;
    color: rgba(244, 237, 220, 0.92);
    font-weight: 400;
    transition: color 0.3s;
  }
  .program__quote {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 13px;
    color: rgba(244, 237, 220, 0.68);
    line-height: 1.6;
    margin-top: 4px;
  }
  .program__meta {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    color: rgba(244, 237, 220, 0.62);
    text-align: right;
    line-height: 1.6;
    align-self: center;
    white-space: nowrap;
  }
  .program__meta span { display: block; }

  /* ============================================================
     REQUEST WALL — entry to "听众点歌墙"
     ============================================================ */
  .request {
    position: relative;
    padding: 14vh 0 18vh 0;
    max-width: 720px;
    border-top: 1px dashed var(--ink-ghost);
    margin-top: 4vh;
  }
  .request__kicker {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.25em;
    color: var(--ink-faint);
    margin-bottom: 24px;
  }
  .request__lead {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(20px, 2.4vw, 26px);
    line-height: 1.6;
    color: var(--ink-dim);
    margin-bottom: 32px;
    max-width: 22em;
  }
  .request__cta {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--tuner-warm);
    text-decoration: none;
    background: transparent;
    border: 0;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(232, 161, 75, 0.4);
    transition: gap 0.3s, color 0.2s;
    cursor: pointer;
  }
  .request__cta:hover {
    gap: 18px;
    color: var(--tuner-warm);
    border-color: var(--tuner-warm);
  }
  .request__form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 520px;
  }
  .request__fields {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 18px;
    padding: 14px 0 12px;
    margin-bottom: 2px;
    border-top: 1px solid rgba(242, 184, 99, 0.18);
    border-bottom: 1px solid rgba(242, 184, 99, 0.16);
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .request__fields::before {
    content: "信箱抬头";
    position: absolute;
    top: -7px;
    left: 0;
    padding-right: 10px;
    background: transparent;
    color: rgba(242, 184, 99, 0.62);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.22em;
  }
  .request__fields::after {
    content: "";
    position: absolute;
    left: 0;
    right: 48%;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, rgba(242, 184, 99, 0.72), transparent);
    opacity: 0.42;
  }
  .request__field {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .request__label {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.22em;
    color: rgba(242, 184, 99, 0.68);
  }
  .request__line-input,
  .request__input {
    width: 100%;
    padding: 14px 16px;
    border: 1px dashed rgba(244, 237, 220, 0.20);
    border-radius: 3px;
    background: transparent;
    color: var(--paper);
    font-family: var(--font-serif);
    font-size: 15px;
    line-height: 1.7;
    outline: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .request__line-input {
    height: 34px;
    padding: 4px 0 8px;
    border: 0;
    border-bottom: 1px solid rgba(244, 237, 220, 0.18);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    color: rgba(244, 237, 220, 0.9);
  }
  .request__input {
    resize: vertical;
    min-height: 112px;
    border-color: rgba(244, 237, 220, 0.16);
    background: transparent;
  }
  .request__line-input::placeholder,
  .request__input::placeholder {
    color: rgba(244, 237, 220, 0.34);
  }
  .request__line-input:focus,
  .request__input:focus {
    border-color: rgba(242, 184, 99, 0.62);
    box-shadow: 0 0 0 1px rgba(242, 184, 99, 0.12);
  }
  .request__line-input:focus {
    border-color: rgba(242, 184, 99, 0.86);
    box-shadow: 0 10px 22px -20px rgba(242, 184, 99, 0.95);
  }
  .request__wall {
    display: grid;
    gap: 10px;
    max-width: 520px;
    margin-top: 28px;
  }
  .request__note {
    padding: 12px 14px;
    border-left: 1px solid rgba(242, 184, 99, 0.42);
    background: rgba(244, 237, 220, 0.045);
    color: rgba(244, 237, 220, 0.78);
    font-size: 14px;
    line-height: 1.6;
  }
  .request__note-code {
    display: block;
    margin-bottom: 5px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.12em;
    color: var(--tuner-warm);
  }
  .request__note-name {
    color: rgba(244, 237, 220, 0.88);
  }
  .request__note-time {
    display: block;
    margin-top: 6px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.12em;
    color: rgba(244, 237, 220, 0.42);
  }
  .request__sign {
    margin-top: 60px;
    font-family: var(--font-hand);
    font-size: 22px;
    color: var(--ink-dim);
    line-height: 1.5;
  }
  .request-float {
    position: fixed;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    overflow: hidden;
  }
  .request-float__note {
    position: absolute;
    top: var(--top);
    left: 0;
    max-width: min(360px, 74vw);
    padding: 9px 12px 10px;
    border-left: 1px solid rgba(242, 184, 99, 0.48);
    background:
      linear-gradient(90deg, rgba(14, 15, 18, 0.66), rgba(14, 15, 18, 0.22)),
      rgba(244, 237, 220, 0.035);
    color: rgba(244, 237, 220, 0.72);
    font-size: 13px;
    line-height: 1.55;
    text-shadow: 0 0 12px rgba(244, 237, 220, 0.16);
    box-shadow: 0 0 28px rgba(232, 161, 75, 0.07);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    transform: translate3d(108vw, 0, 0);
    animation: request-drift var(--duration) linear var(--delay) infinite;
    opacity: 0;
  }
  .request-float__note span {
    display: block;
    margin-bottom: 3px;
    font-family: var(--font-mono);
    font-size: 8px;
    letter-spacing: 0.15em;
    color: rgba(242, 184, 99, 0.78);
  }
  .request-float__name {
    display: inline;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    color: var(--tuner-warm);
  }
  @keyframes request-drift {
    0% {
      opacity: 0;
      transform: translate3d(108vw, 0, 0);
    }
    10%, 82% { opacity: 0.82; }
    100% {
      opacity: 0;
      transform: translate3d(-120%, -16px, 0);
    }
  }

  /* ============================================================
     PLAYER CONSOLE — bottom dock, replaces the old status bar
     ============================================================ */
  .player {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    height: 64px;
    z-index: 30;
    background: rgba(8, 9, 11, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--ink-ghost);
    display: flex;
    align-items: center;
    padding: 0 28px 0 calc(var(--gutter-l) + 18px);
    gap: 20px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-dim);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.6s ease-out 0.4s, transform 0.6s ease-out 0.4s;
  }
  body[data-phase="locked"] .player {
    opacity: 1;
    transform: none;
  }

  /* progress rail along the very top edge */
  .player__progress {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 20px;
    background: transparent;
    cursor: pointer;
    overflow: visible;
    touch-action: none;
  }
  .player__progress::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 2px;
    background: rgba(244, 237, 220, 0.06);
    transition: height 0.2s;
  }
  .player__progress:hover::before,
  .player__progress:focus-visible::before { height: 4px; }
  .player__progress-fill {
    position: absolute;
    left: 0; top: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--signal-red) 0%, var(--tuner-amber) 60%, var(--tuner-warm) 100%);
    width: 0%;
    box-shadow: 0 0 10px rgba(232, 161, 75, 0.45);
    transition: width 0.18s linear, height 0.2s;
  }
  .player__progress:hover .player__progress-fill,
  .player__progress:focus-visible .player__progress-fill { height: 4px; }
  .player__progress-thumb {
    position: absolute;
    top: 2px;
    left: 0;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--tuner-warm);
    box-shadow: 0 0 8px rgba(232, 161, 75, 0.85);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.2s, left 0.18s linear;
    pointer-events: none;
  }
  .player[data-state="playing"] .player__progress-thumb { opacity: 1; }

  /* play / pause button — circle with a subtle red border */
  .player__btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(179, 48, 56, 0.55);
    background: rgba(179, 48, 56, 0.06);
    color: var(--signal-glow);
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.18s, border-color 0.18s, transform 0.12s, box-shadow 0.2s;
    padding: 0;
  }
  .player__btn:hover {
    background: rgba(179, 48, 56, 0.18);
    border-color: var(--signal-red);
    box-shadow: 0 0 18px rgba(209, 70, 84, 0.3);
  }
  .player__btn:active { transform: scale(0.92); }
  .player[data-state="playing"] .player__btn {
    border-color: var(--tuner-warm);
    color: var(--tuner-warm);
    background: rgba(232, 161, 75, 0.08);
  }
  .player[data-state="playing"] .player__btn:hover {
    background: rgba(232, 161, 75, 0.18);
    box-shadow: 0 0 18px rgba(232, 161, 75, 0.35);
  }
  /* play triangle, visible when paused */
  .player__icon-play {
    display: block;
    width: 0; height: 0;
    border-left: 9px solid currentColor;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    margin-left: 2px;
  }
  /* pause bars, visible when playing */
  .player__icon-pause {
    display: none;
    width: 9px;
    height: 11px;
    border-left: 2.5px solid currentColor;
    border-right: 2.5px solid currentColor;
  }
  .player[data-state="playing"] .player__icon-play { display: none; }
  .player[data-state="playing"] .player__icon-pause { display: block; }

  /* prev / next small buttons */
  .player__nav {
    background: none;
    border: none;
    padding: 6px 4px;
    cursor: pointer;
    color: var(--ink-faint);
    font-size: 14px;
    line-height: 1;
    transition: color 0.18s;
  }
  .player__nav:hover { color: var(--ink); }

  /* center: program info */
  .player__title {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: baseline;
    gap: 12px;
    overflow: hidden;
  }
  .player__no {
    color: var(--tuner-warm);
    font-size: 11px;
    letter-spacing: 0.1em;
    flex-shrink: 0;
  }
  .player__name {
    color: var(--paper);
    font-family: var(--font-serif);
    font-size: 14px;
    font-style: italic;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.2s;
  }

  /* right: time read-out + share */
  .player__time {
    font-feature-settings: "tnum" 1;
    font-variant-numeric: tabular-nums;
    color: var(--ink-dim);
    letter-spacing: 0.05em;
    flex-shrink: 0;
    white-space: nowrap;
  }
  .player__time .sep { color: var(--ink-faint); margin: 0 6px; }
  .player__speed {
    border: 1px solid rgba(244, 237, 220, 0.18);
    background: rgba(244, 237, 220, 0.035);
    color: rgba(244, 237, 220, 0.72);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    border-radius: 999px;
    padding: 6px 9px;
    cursor: pointer;
    transition: border-color 0.18s, color 0.18s, background 0.18s;
    flex-shrink: 0;
  }
  .player__speed:hover {
    color: var(--tuner-warm);
    border-color: rgba(242, 184, 99, 0.44);
    background: rgba(232, 161, 75, 0.08);
  }
  .player__copy {
    background: none;
    border: 1px solid var(--ink-ghost);
    color: var(--ink-faint);
    cursor: pointer;
    padding: 6px 10px;
    font: inherit;
    font-size: 10px;
    letter-spacing: 0.18em;
    border-radius: 999px;
    transition: color 0.18s, border-color 0.18s;
    flex-shrink: 0;
  }
  .player__copy:hover {
    color: var(--tuner-warm);
    border-color: rgba(232, 161, 75, 0.4);
  }

  /* signal strength bars to the left of program title */
  .player__signal {
    display: inline-flex;
    align-items: flex-end;
    gap: 2px;
    height: 14px;
    flex-shrink: 0;
    margin-right: -4px;
  }
  .player__signal i {
    display: block;
    width: 2px;
    background: var(--ink-faint);
    border-radius: 1px;
    transition: background 0.2s;
  }
  .player__signal i:nth-child(1) { height: 4px; }
  .player__signal i:nth-child(2) { height: 7px; }
  .player__signal i:nth-child(3) { height: 10px; }
  .player__signal i:nth-child(4) { height: 13px; }
  .player[data-state="playing"] .player__signal i { background: var(--tuner-warm); }
  .player[data-state="playing"] .player__signal i:nth-child(1) { animation: signal-pulse 1.4s ease-in-out infinite; }
  .player[data-state="playing"] .player__signal i:nth-child(2) { animation: signal-pulse 1.4s ease-in-out 0.18s infinite; }
  .player[data-state="playing"] .player__signal i:nth-child(3) { animation: signal-pulse 1.4s ease-in-out 0.32s infinite; }
  .player[data-state="playing"] .player__signal i:nth-child(4) { animation: signal-pulse 1.4s ease-in-out 0.5s infinite; }
  @keyframes signal-pulse {
    0%, 100% { opacity: 0.55; }
    50%      { opacity: 1; }
  }

  /* the old status bar text — keep for fallback / no-JS, hidden by default */
  .status { display: none; }

  @media (max-width: 720px) {
    .request__fields {
      grid-template-columns: 1fr;
    }
    .request-float__note {
      max-width: 78vw;
      font-size: 12px;
    }
    .player {
      height: 56px;
      padding: 0 12px;
      gap: 10px;
      font-size: 10px;
    }
    .player__btn { width: 32px; height: 32px; }
    .player__name { font-size: 12px; }
    .player__time { font-size: 9px; }
    .player__copy {
      padding: 4px 8px;
      font-size: 9px;
    }
    .player__nav { display: none; }
    .player__no { display: none; }
    .player__signal { display: none; }
  }

  .toast {
    position: fixed;
    left: 50%;
    bottom: 88px;
    transform: translateX(-50%) translateY(20px);
    padding: 14px 22px;
    background: rgba(14, 15, 18, 0.92);
    border: 1px solid rgba(232, 161, 75, 0.35);
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s, transform 0.4s;
    z-index: 60;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.6);
    white-space: pre-line;
    text-align: center;
  }
  .toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  /* ============================================================
     MOBILE — collapse the tuner to a thin top bar
     ============================================================ */
  @media (max-width: 720px) {
    :root { --gutter-l: 18px; --gutter-r: 18px; }

    .tuner {
      width: 100%;
      height: 56px;
      bottom: auto;
      flex-direction: row;
      border-bottom: 1px solid var(--ink-ghost);
      background: rgba(8, 9, 11, 0.85);
      backdrop-filter: blur(8px);
    }
    .tuner__rail {
      width: auto; height: 1px;
      flex: 1;
      margin: 0 18px;
      background: linear-gradient(90deg,
        transparent 0%,
        rgba(244, 237, 220, 0.18) 12%,
        rgba(244, 237, 220, 0.18) 88%,
        transparent 100%);
    }
    .tuner__tick {
      left: auto; top: 50%;
      width: 1px; height: 7px;
      transform: translateY(-50%);
    }
    .tuner__tick--major { height: 11px; }
    .tuner__label { left: auto; top: 16px; transform: translateX(-50%); }
    .tuner__needle {
      left: auto; top: 50%;
      width: 1px; height: 24px;
      transform: translateY(-50%);
      transition: left 1.4s cubic-bezier(.7, .05, .25, 1);
    }
    .tuner__readout {
      position: relative;
      bottom: auto; left: auto;
      transform: none;
      flex-shrink: 0;
      text-align: left;
      padding: 0 12px;
    }
    .tuner__readout strong { display: inline; }
    .tuner__masthead { display: none; }

    .stage { padding-top: 70px; }
    .opening { min-height: calc(100vh - 70px); padding-top: 4vh; }
    .mute { top: auto; bottom: 14px; right: 14px; }
    .status { left: 14px; right: 14px; bottom: 56px; font-size: 9px; }
    .program { grid-template-columns: 44px 1fr; }
    .program__meta { grid-column: 2; text-align: left; }
  }

  /* ============================================================
     ON AIR sign + VU meter — top right cluster, near the mute key
     ============================================================ */
  .gauges {
    position: fixed;
    top: 24px;
    right: 32px;
    z-index: 39;
    display: flex;
    align-items: center;
    gap: 14px;
    pointer-events: none;
    transform: translateX(-130px); /* sit to the LEFT of the mute button */
  }
  .on-air {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border: 1px solid rgba(179, 48, 56, 0.5);
    background: rgba(179, 48, 56, 0.08);
    color: var(--signal-glow);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.22em;
    border-radius: 3px;
    opacity: 0;
    transition: opacity 0.6s ease-out 0.4s;
  }
  body[data-phase="locked"] .on-air { opacity: 1; }
  body[data-phase="locked"][data-air="off"] .on-air {
    color: var(--ink-faint);
    border-color: rgba(244, 237, 220, 0.18);
    background: rgba(14, 15, 18, 0.5);
  }
  .on-air__dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--signal-red);
    box-shadow: 0 0 6px rgba(209, 70, 84, 0.85);
    animation: dot-blink 1.4s ease-in-out infinite;
  }
  body[data-air="off"] .on-air__dot {
    background: rgba(244, 237, 220, 0.3);
    box-shadow: none;
    animation: none;
  }

  .vu {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 22px;
    padding: 0 2px;
    border-left: 1px solid var(--ink-ghost);
    border-right: 1px solid var(--ink-ghost);
    opacity: 0;
    transition: opacity 0.6s ease-out 0.6s;
  }
  body[data-phase="locked"] .vu { opacity: 0.85; }
  .vu__bar {
    width: 3px;
    height: 4px;
    background: linear-gradient(180deg, var(--tuner-warm), var(--tuner-amber));
    border-radius: 1px;
    transform-origin: bottom;
    transition: height 0.08s linear, opacity 0.2s;
  }
  body[data-air="off"] .vu__bar { opacity: 0.35; }

  /* ============================================================
     PROGRAM PROGRESS LINE — live "now playing" feel
     ============================================================ */
  .program__progress {
    grid-column: 1 / -1;
    position: relative;
    height: 1px;
    margin-top: 22px;
    margin-bottom: -22px;
    background: rgba(244, 237, 220, 0.06);
    overflow: hidden;
  }
  .program__progress::before {
    content: "";
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: var(--p, 100%);
    background: linear-gradient(90deg,
      rgba(209, 70, 84, 0.15),
      rgba(232, 161, 75, 0.5),
      rgba(232, 161, 75, 0.15));
  }
  .program__progress[data-state="live"]::before {
    background: linear-gradient(90deg,
      rgba(209, 70, 84, 0.45),
      var(--signal-glow));
    box-shadow: 0 0 6px rgba(209, 70, 84, 0.5);
  }
  .program__progress[data-state="live"]::after {
    content: "";
    position: absolute;
    top: -1px; bottom: -1px;
    left: var(--p, 67%);
    width: 6px;
    background: radial-gradient(circle, var(--signal-glow), transparent 70%);
    transform: translateX(-50%);
  }

  /* needle wiggle on program hover (radio "tuning shake") */
  @keyframes needle-wiggle {
    0%, 100% { transform: translateX(-50%); }
    25%      { transform: translateX(calc(-50% - 4px)); }
    50%      { transform: translateX(calc(-50% + 3px)); }
    75%      { transform: translateX(calc(-50% - 2px)); }
  }
  .tuner__needle.is-wiggling {
    animation: needle-wiggle 0.32s ease-out;
  }
  @media (max-width: 720px) {
    @keyframes needle-wiggle-h {
      0%, 100% { transform: translateY(-50%); }
      25%      { transform: translateY(calc(-50% - 4px)); }
      50%      { transform: translateY(calc(-50% + 3px)); }
      75%      { transform: translateY(calc(-50% - 2px)); }
    }
    .tuner__needle.is-wiggling { animation: needle-wiggle-h 0.32s ease-out; }
  }

  /* ============================================================
     SHORTCUT PANEL — press / to summon
     ============================================================ */
  .shortcuts {
    position: fixed;
    inset: 0;
    z-index: 70;
    display: none;
    background: rgba(8, 9, 11, 0.78);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    align-items: center;
    justify-content: center;
    padding: 24px;
  }
  .shortcuts.show { display: flex; animation: cue-in 0.3s ease-out; }
  .shortcuts__card {
    border: 1px solid rgba(244, 237, 220, 0.18);
    background: rgba(14, 15, 18, 0.92);
    padding: 32px 38px;
    max-width: 440px;
    width: 100%;
    color: var(--ink-dim);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  }
  .shortcuts__head {
    color: var(--tuner-warm);
    font-size: 11px;
    letter-spacing: 0.25em;
    margin-bottom: 20px;
  }
  .shortcuts__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-top: 1px solid var(--ink-ghost);
  }
  .shortcuts__row:first-of-type { border-top: none; }
  .shortcuts__keys {
    display: inline-flex;
    gap: 6px;
  }
  .shortcuts__keys kbd {
    font: inherit;
    padding: 3px 8px;
    border: 1px solid rgba(244, 237, 220, 0.35);
    border-bottom-width: 2px;
    border-radius: 3px;
    color: var(--paper);
    background: rgba(244, 237, 220, 0.04);
    min-width: 18px;
    text-align: center;
  }
  .shortcuts__hint {
    margin-top: 22px;
    color: var(--ink-faint);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-align: right;
  }

  /* small "press / for shortcuts" floating hint, shown once */
  .keyhint {
    position: fixed;
    left: 50%;
    bottom: 110px;
    transform: translateX(-50%) translateY(8px);
    padding: 8px 16px;
    border: 1px solid rgba(244, 237, 220, 0.18);
    background: rgba(14, 15, 18, 0.8);
    color: var(--ink-dim);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    border-radius: 999px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s, transform 0.6s;
    z-index: 35;
  }
  .keyhint.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  .keyhint kbd {
    font: inherit;
    padding: 1px 6px;
    margin: 0 4px;
    border: 1px solid rgba(244, 237, 220, 0.3);
    border-radius: 3px;
    color: var(--paper);
  }

  /* (retired) edge-of-signal — removed; the visible jitter was interfering with scroll feel */


  /* ============================================================
     SIGNAL RIPPLE — fires once when needle locks at 87.3
     ============================================================ */
  .ripple-stage {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 6;
    overflow: hidden;
  }
  .ripple {
    position: absolute;
    width: 6px; height: 6px;
    border-radius: 50%;
    border: 1px solid rgba(232, 161, 75, 0.55);
    transform: translate(-50%, -50%);
    animation: ripple-out 4.2s cubic-bezier(.25, .8, .35, 1) forwards;
    box-shadow: 0 0 14px rgba(232, 161, 75, 0.35);
  }
  .ripple--2 { animation-delay: 0.45s; border-color: rgba(232, 161, 75, 0.35); }
  .ripple--3 { animation-delay: 0.95s; border-color: rgba(232, 161, 75, 0.20); }
  @keyframes ripple-out {
    0%   { width: 6px; height: 6px; opacity: 0.85; }
    100% { width: 220vmax; height: 220vmax; opacity: 0; }
  }

  /* ============================================================
     CLOCK — replaces "FM · NIGHT" in the tuner readout
     ============================================================ */
  .clock {
    font-family: var(--font-mono);
    font-feature-settings: "tnum" 1;
    font-variant-numeric: tabular-nums;
    color: var(--ink-faint);
    letter-spacing: 0.08em;
  }

  /* ============================================================
     DWELL MESSAGE — "今晚到这里了" when user lingers at bottom
     ============================================================ */
  .dwell-msg {
    position: fixed;
    left: 50%;
    bottom: 22%;
    transform: translateX(-50%) translateY(12px);
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(20px, 2.4vw, 26px);
    color: var(--paper);
    letter-spacing: 0.04em;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.2s ease-out, transform 1.2s ease-out;
    z-index: 55;
    text-shadow: 0 0 24px rgba(0, 0, 0, 0.6);
  }
  .dwell-msg.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  .dwell-msg__sub {
    display: block;
    margin-top: 10px;
    font-family: var(--font-hand);
    font-size: 18px;
    color: var(--tuner-warm);
    font-style: normal;
  }

  /* ============================================================
     RESUME CARD — "↻ 上次听到 N°XX · m:ss" persistent overlay
     ============================================================ */
  .resume {
    position: fixed;
    left: 24px;
    bottom: 110px;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 11px 12px 11px 18px;
    max-width: min(560px, calc(100vw - 48px));
    background: rgba(14, 15, 18, 0.94);
    border: 1px solid rgba(232, 161, 75, 0.32);
    border-radius: 4px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--paper);
    letter-spacing: 0.06em;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    pointer-events: none;
  }
  .resume.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .resume__pre {
    color: var(--tuner-warm);
    letter-spacing: 0.12em;
    font-size: 11px;
    text-transform: none;
  }
  .resume__title {
    color: var(--paper);
    font-family: var(--font-serif);
    font-size: 14px;
    letter-spacing: 0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 280px;
  }
  .resume__time {
    color: var(--tuner-amber);
    font-variant-numeric: tabular-nums;
  }
  .resume__btn {
    margin-left: auto;
    text-decoration: none;
    color: var(--paper);
    border: 1px solid rgba(232, 161, 75, 0.4);
    padding: 7px 12px;
    border-radius: 3px;
    font-size: 11px;
    letter-spacing: 0.08em;
    transition: background 0.2s, border-color 0.2s;
    cursor: pointer;
    white-space: nowrap;
    background: transparent;
  }
  .resume__btn:hover {
    background: rgba(232, 161, 75, 0.12);
    border-color: var(--tuner-amber);
  }
  .resume__close {
    background: transparent;
    border: 0;
    color: var(--ink-faint);
    font-size: 18px;
    line-height: 1;
    width: 24px;
    height: 24px;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    transition: color 0.2s, background 0.2s;
  }
  .resume__close:hover {
    color: var(--paper);
    background: rgba(244, 237, 220, 0.06);
  }
  @media (max-width: 720px) {
    .resume {
      left: 12px;
      right: 12px;
      bottom: 88px;
      max-width: none;
      flex-wrap: wrap;
      gap: 8px 12px;
      padding: 10px 10px 10px 14px;
    }
    .resume__title {
      max-width: 100%;
      flex: 1 1 100%;
      order: 2;
      white-space: normal;
    }
    .resume__pre  { order: 1; }
    .resume__time { order: 3; }
    .resume__btn  { order: 4; margin-left: auto; }
    .resume__close{ order: 5; }
  }

  /* ============================================================
     PARTICLES — home-only canvas + upload UI
     ============================================================ */
  #mesh-canvas, #particles-canvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
  }
  .particles-ui {
    position: fixed;
    bottom: 110px;
    right: 32px;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
  }
  .particles-ui__btn {
    display: inline-block;
    padding: 8px 14px;
    border: 1px solid rgba(242, 184, 99, 0.4);
    background: rgba(14, 15, 18, 0.85);
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    border-radius: 3px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, opacity 0.2s;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    user-select: none;
  }
  .particles-ui__btn:hover {
    background: rgba(242, 184, 99, 0.15);
    border-color: var(--tuner-warm);
  }
  .particles-ui__btn--ghost {
    background: transparent;
    border-style: dashed;
    opacity: 0.7;
  }
  .particles-ui__btn--ghost:hover {
    opacity: 1;
  }
  .particles-ui__presets {
    display: flex;
    gap: 6px;
    align-items: center;
  }
  .particles-ui__modes {
    display: flex;
    gap: 4px;
    padding: 4px;
    border: 1px solid rgba(244, 237, 220, 0.12);
    background: rgba(8, 9, 11, 0.46);
    border-radius: 999px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }
  .particles-ui__mode {
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: rgba(244, 237, 220, 0.52);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.08em;
    padding: 5px 8px;
    cursor: pointer;
    transition: background 0.18s, color 0.18s;
  }
  .particles-ui__mode:hover,
  .particles-ui__mode.is-active {
    background: rgba(232, 161, 75, 0.12);
    color: var(--tuner-warm);
  }
  .particles-ui__thumb {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(244, 237, 220, 0.22);
    background-size: cover;
    background-position: center;
    background-color: transparent;
    cursor: pointer;
    padding: 0;
    transition: transform 0.18s ease-out, border-color 0.18s, box-shadow 0.18s;
  }
  .particles-ui__thumb:hover {
    transform: scale(1.15);
    border-color: var(--tuner-warm);
    box-shadow: 0 0 12px rgba(242, 184, 99, 0.45);
  }
  .particles-ui__thumb.is-active {
    border-color: var(--tuner-warm);
    box-shadow: 0 0 0 2px rgba(242, 184, 99, 0.18), 0 0 14px rgba(242, 184, 99, 0.36);
  }
  .particles-ui__thumb:active {
    transform: scale(1.05);
  }

  .band-card-preview {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: grid;
    place-items: center;
    padding: 24px;
    background: rgba(8, 9, 11, 0.68);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
  .band-card-preview[hidden] { display: none; }
  .band-card-preview__panel {
    width: min(760px, calc(100vw - 32px));
    border: 1px solid rgba(242, 184, 99, 0.28);
    background: rgba(13, 14, 18, 0.92);
    box-shadow: 0 18px 70px rgba(0, 0, 0, 0.55);
    padding: 14px;
  }
  .band-card-preview__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: rgba(244, 237, 220, 0.62);
  }
  .band-card-preview__close {
    border: 0;
    background: transparent;
    color: rgba(244, 237, 220, 0.55);
    font-size: 20px;
    cursor: pointer;
  }
  .band-card-preview__img {
    display: block;
    width: 100%;
    aspect-ratio: 1200 / 630;
    object-fit: cover;
    border: 1px solid rgba(244, 237, 220, 0.10);
    background: var(--bg-deep);
  }
  .band-card-preview__actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 12px;
  }
  .band-card-preview__btn {
    border: 1px solid rgba(242, 184, 99, 0.42);
    background: transparent;
    color: var(--tuner-warm);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    padding: 8px 12px;
    cursor: pointer;
  }
  .band-card-preview__btn--ghost {
    border-color: rgba(244, 237, 220, 0.18);
    color: rgba(244, 237, 220, 0.72);
  }
  @media (max-width: 720px) {
    .particles-ui {
      right: 12px;
      bottom: 92px;
    }
    .particles-ui__btn {
      font-size: 10px;
      padding: 7px 10px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }

  /* ============================================================
     ARTICLE — single-program page
     ============================================================ */
  .article {
    max-width: 660px;
    padding: 12vh 0 20vh 0;
    color: var(--ink);
  }
  .article__head {
    margin-bottom: 56px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--ink-ghost);
  }
  .article__back {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--ink-faint);
    text-decoration: none;
    margin-bottom: 32px;
    transition: color 0.2s, gap 0.25s;
  }
  .article__back:hover {
    color: var(--tuner-warm);
    gap: 16px;
  }
  .article__cue {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: var(--ink-faint);
    margin-bottom: 18px;
  }
  .article__no {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--tuner-warm);
    margin-bottom: 14px;
  }
  .article__title {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(28px, 4vw, 40px);
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: 28px;
    letter-spacing: 0.005em;
  }
  .article__lead {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.7;
    color: var(--ink-dim);
    max-width: 22em;
    border-left: 2px solid var(--signal-red);
    padding-left: 18px;
    margin-bottom: 22px;
  }
  .article__meta {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.15em;
    color: var(--ink-faint);
  }
  .article__meta span + span::before {
    content: " · ";
    color: var(--ink-ghost);
  }

  .article__body {
    font-family: var(--font-serif);
    font-size: clamp(16px, 1.4vw, 18px);
    line-height: 1.95;
    color: var(--ink);
    letter-spacing: 0.005em;
  }
  .article__body [data-read-cue] {
    position: relative;
    isolation: isolate;
    transition: color 0.35s ease, opacity 0.35s ease, text-shadow 0.35s ease;
  }
  .article__body[data-reading-active="true"] [data-read-cue] {
    opacity: 0.58;
  }
  .article__body[data-reading-active="true"] [data-read-state="active"] {
    color: var(--paper);
    opacity: 1;
    background:
      linear-gradient(90deg,
        rgba(232, 161, 75, 0.00) 0%,
        rgba(232, 161, 75, 0.10) var(--read-p, 0%),
        rgba(209, 70, 84, 0.10) calc(var(--read-p, 0%) + 1px),
        rgba(232, 161, 75, 0.00) calc(var(--read-p, 0%) + 15%));
    box-shadow: -1px 0 0 rgba(242, 184, 99, 0.36);
    text-shadow:
      0 0 12px rgba(242, 184, 99, 0.28),
      0 0 28px rgba(209, 70, 84, 0.16);
  }
  .article__body p {
    margin: 0 0 1.4em 0;
  }
  .article__body p.lede {
    font-size: clamp(17px, 1.6vw, 20px);
    color: var(--paper);
    margin-bottom: 1.6em;
  }
  .article__body strong {
    font-weight: 500;
    color: var(--paper);
    background: linear-gradient(transparent 60%, rgba(232, 161, 75, 0.18) 60%);
    padding: 0 2px;
  }
  .article__body em {
    color: var(--tuner-warm);
    font-style: italic;
  }
  .article__body a {
    color: var(--tuner-warm);
    text-decoration: underline;
    text-decoration-color: rgba(232, 161, 75, 0.4);
    text-underline-offset: 4px;
  }

  .article__pull {
    margin: 2.4em 0;
    padding: 18px 0 18px 26px;
    border-left: 2px solid var(--tuner-amber);
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(18px, 1.8vw, 22px);
    line-height: 1.7;
    color: var(--paper);
    max-width: 22em;
  }
  .article__pull::before { content: "「"; color: var(--ink-faint); margin-right: 0.05em; }
  .article__pull::after { content: "」"; color: var(--ink-faint); margin-left: 0.05em; }

  .article__divider {
    border: none;
    height: 1px;
    background: var(--ink-ghost);
    margin: 3.4em 0;
    position: relative;
  }
  .article__divider::after {
    content: "·";
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-deep);
    padding: 0 14px;
    color: var(--ink-faint);
    font-size: 14px;
    line-height: 1;
  }

  /* postscript / signoff */
  .article__signoff {
    margin-top: 5.5em;
    padding-top: 2.4em;
    border-top: 1px dashed var(--ink-ghost);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--ink-faint);
  }
  .article__sign-line {
    display: block;
    color: var(--tuner-warm);
    margin-bottom: 16px;
    letter-spacing: 0.3em;
    text-align: center;
  }
  .article__sign-meta {
    text-align: center;
    margin-bottom: 18px;
  }
  .article__sign-text {
    font-family: var(--font-hand);
    font-size: 22px;
    color: var(--ink-dim);
    text-align: center;
    margin-bottom: 36px;
    letter-spacing: 0.04em;
  }
  .article__nav-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
  }
  .article__nav-row a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--ink-dim);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--ink-ghost);
    transition: color 0.2s, border-color 0.2s, gap 0.25s;
  }
  .article__nav-row a:hover {
    color: var(--tuner-warm);
    border-color: rgba(232, 161, 75, 0.4);
  }
  .article__nav-row a.next:hover { gap: 18px; }
  .article__nav-row a.prev:hover { gap: 18px; }
  .article__nav-row .home {
    color: var(--ink-faint);
    font-size: 10px;
  }

  /* ============================================================
     FLAIR — per-program signature visuals
     ============================================================ */

  /* N°07 reverse-todo list — items appear struck-through, showing them
      crosses out the strike (the "didn't do" reveals itself) */
  .flair-todo {
    list-style: none;
    margin: 1.6em 0 2em 0;
    padding: 0;
    border-top: 1px solid var(--ink-ghost);
  }
  .flair-todo li {
    position: relative;
    padding: 14px 8px 14px 32px;
    border-bottom: 1px solid var(--ink-ghost);
    font-family: var(--font-serif);
    font-size: 16px;
    color: var(--ink-dim);
    transition: color 0.25s, background 0.25s;
    cursor: default;
  }
  .flair-todo li::before {
    content: "✕";
    position: absolute;
    left: 8px; top: 50%;
    transform: translateY(-50%);
    color: var(--signal-red);
    font-size: 12px;
    opacity: 0.7;
    transition: color 0.2s, transform 0.25s;
  }
  .flair-todo li::after {
    content: "";
    position: absolute;
    left: 32px; right: 8px;
    top: 50%;
    height: 1px;
    background: var(--ink-faint);
    transform-origin: left;
    transform: scaleX(1);
    transition: transform 0.4s ease-in-out, background 0.25s;
  }
  .flair-todo li:hover {
    color: var(--paper);
    background: rgba(232, 161, 75, 0.04);
  }
  .flair-todo li:hover::after { transform: scaleX(0); }
  .flair-todo li:hover::before { color: var(--tuner-warm); transform: translateY(-50%) rotate(90deg); }

  /* N°06 efficiency-tool fade-out */
  .flair-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    margin: 1.4em 0 2em 0;
    padding: 22px 0;
    border-top: 1px solid var(--ink-ghost);
    border-bottom: 1px solid var(--ink-ghost);
  }
  .flair-tools span {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.05em;
    color: var(--ink-dim);
    padding: 6px 14px;
    border: 1px solid var(--ink-ghost);
    border-radius: 999px;
    transition: all 0.45s;
    position: relative;
  }
  .flair-tools span::after {
    content: "";
    position: absolute;
    left: 16%; right: 16%;
    top: 50%;
    height: 1px;
    background: var(--signal-red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(.5,0,.4,1);
    transition-delay: var(--d, 0s);
  }
  .flair-tools.crossed span {
    color: var(--ink-faint);
    border-color: var(--ink-ghost);
    opacity: 0.55;
  }
  .flair-tools.crossed span::after { transform: scaleX(1); }

  /* N°05 typewriter cursor + line */
  .flair-typewrite {
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.8;
    color: var(--paper);
    background: rgba(232, 161, 75, 0.04);
    border: 1px solid var(--ink-ghost);
    border-radius: 4px;
    padding: 18px 22px;
    margin: 1.8em 0;
    position: relative;
    overflow: hidden;
  }
  .flair-typewrite__line {
    color: var(--ink-dim);
  }
  .flair-typewrite__line::before {
    content: "// ";
    color: var(--ink-faint);
  }
  .flair-typewrite__cursor {
    display: inline-block;
    width: 7px;
    height: 14px;
    background: var(--tuner-warm);
    vertical-align: -2px;
    margin-left: 2px;
    animation: cursor-blink 1.1s steps(2) infinite;
  }
  @keyframes cursor-blink { 50% { opacity: 0; } }

  /* N°04 two-column gap */
  .flair-gap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin: 1.8em 0 2em 0;
    border-top: 1px solid var(--ink-ghost);
    border-bottom: 1px solid var(--ink-ghost);
    position: relative;
  }
  .flair-gap > div {
    padding: 22px 22px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.85;
    color: var(--ink-dim);
  }
  .flair-gap > div + div {
    border-left: 1px dashed rgba(232, 161, 75, 0.4);
  }
  .flair-gap__heading {
    display: block;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 14px;
    color: var(--tuner-warm);
    margin-bottom: 12px;
  }
  .flair-gap__divider-label {
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%, -50%) rotate(90deg);
    transform-origin: center;
    background: var(--bg-deep);
    padding: 4px 12px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.25em;
    color: var(--ink-faint);
    pointer-events: none;
  }
  @media (max-width: 720px) {
    .flair-gap { grid-template-columns: 1fr; }
    .flair-gap > div + div {
      border-left: none;
      border-top: 1px dashed rgba(232, 161, 75, 0.4);
    }
    .flair-gap__divider-label { display: none; }
  }

  /* N°03 fade-to-silence at the end */
  .article[data-flair="N°03"] .article__signoff {
    border-top-color: rgba(244, 237, 220, 0.04);
  }
  .article[data-flair="N°03"] .article__body > p:nth-last-of-type(1),
  .article[data-flair="N°03"] .article__body > p:nth-last-of-type(2),
  .article[data-flair="N°03"] .article__body > p:nth-last-of-type(3) {
    transition: color 1.4s;
  }
  .article[data-flair="N°03"] .article__body > p:nth-last-of-type(2) { color: var(--ink-dim); }
  .article[data-flair="N°03"] .article__body > p:nth-last-of-type(1) { color: var(--ink-faint); }

  /* mobile tweaks */
  @media (max-width: 720px) {
    .article { padding: 6vh 0 16vh 0; }
  }